Molding machine



Mam 2(1), 1923.

J. F. CALDWELL MOLDING MACH INE 5, 1922 2 sheehs-sheetl Filed Apr.

WIN/8858 s/vron TCnqa W: 4.4,,

ATTORNEYS f Mar. 263),, 31923.

J F. CALDWELL MOLDING MACHINE Filed Apr. '5, 1922 2 sheets-sheet 2 l/Vl/E/IITOR J77 CIIOOWELL) 4 mom/5% JAMES FREDERICK CALDWELL,

WELDING Application filed April 5,

To all who-2a it may concern:

Be it known that 1, JAMES F. CALDWELL, citizen of the United States, and resident of Los Angeles, in the county of Les Angeles and State of California, have invented certain new and useful Improvements in l /lolding Machines, ofwhich the following is a specification.

This invention relates to block molds especially adapted for use in the manufacture ot gypsum blocks used for partition walls and other exterior work.

In the manufacture of gypsum blocks the same has a tendency to adhere to the interior walls of the mold and the blocks fre quently break upon being removed from the mold and the object of this invention is to provide simple and reliable means whereby the blocks upon being formed may be removed from the mold without the possibility of breaking or adhering to the wall of the mold.

A further object is to provide a mold for gypsum blocks having simple means whereby the end walls of the mold are moved outvardly immediately upon the completion of tne removal of the core, the outward movement of the end walls being brought about by the movement of the same lever which removes he core, thereby greatly expediting the removal of. the block from the mold.

further object is to provide a gypsum block or tile mold which is of highly simplified construction, durable in use and cheap to manufacture.

Other objects and advantages of the invention will be apparent during the course of the followingdescription.

in the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same,

Figure l is a side elevation of the improved mold.

lligure 2 is a plan view thereof.

Figure 3 is a fragmentary perspective of a pair of wedge-shaped cores embodied in the invention.

fi igure 4 is a perspective of a hammer emthe said hammer ANGELES, CALIFORNIA.

MACHINE;

1922. Serial no. 5-l'8,? l9.

being adapted for tapping the ends of the cores whereby to release the same from the walls of the block.

Figure 5 is a fragmentary perspective of lever and a link employed for swinging the end walls outwardly subsequent to the removal of the cores.

Figure 6 is a detailed view illustrating a modified form of hammer.

In the drawing the numeral 5 designates what might be said to be a platform or base having: its longitudinal edges rigidly connected to spaced parallel side bars 7 the said side bars being extended for substantial distances beyond the ends of the bottom wall 6.

mold consists of a pair of spaced parallcl side walls 8 horizontally hinged at their lower edges to the side bars 7 by means of hinges 9. The side walls 8 of the mold are rel asably held in an upright position by of lugs 11 carried by the vertical edge tion of the end walls 12. lhe end walls are horizontally hinged to the side bars 7 as indicated at 13 and are capable of being swung; outwardly to a limited extent so as 3 if": of we. renloval of the block.

the block has been formed a pair of node's-shaped cores 15 are removed from the mold so as to permit the block to be moved laterally or vertically. Fig. 1 illustrates that the vredoeshaped cores 15 are extended lo. tudinally through the end walls 12 and are of course securely held in position by the openings in the end walls. That is to say the openings which receive the wedge shaped cores 15 are of a size to snugly receive the cores so that the cores cannot move l atera lly.

When it is desired to release the cores 15 a hammer 16 is drawn rearwardly by means of handle 17 and is then released so that it will swing into engagement with the extended ends of the cores 15. The hammer 16 is supported at the upper end of a lever 2-0 connected intermediate its ends to a pivot bar 21. the said pivot bar being connected at its ends to the side bars 7. The lower portion of the lever F20 is as illustrated in l t connected to a coiled spring 2% tioned as illustrated in Figure 1 and that the the the subsequent to the filling of the mold cores 15 are released by pulling back hammer l6 and subsequently releasing same whereby the hammer slides into en gagement with the extended ends of the core.

When the cores 15 have been loosened by means of the hammer 16 the same may be conveniently withdrawn by the operation of a lever pivoted intermediate its ends to a shaft 31 carried by the side bars '7. The lower portion of the lever 30 is pivoted to a link connected at its forward end to an attaching strip or plate The member 3 1- is securely connected to the ends of the wedge-shaped cores 15 so that when the link 33 is moved longitudinally the cores will be withdrawn.

The cores 15 which are arranged in superposed relation are carried-by guides 36 which are in turn connected to standards 37 mounted on the extended portions of the side bars 7.

As the lever 30 approaches the limit of its rearward movement it engages the cross head 40 of a lever 41, the lever being provided with means to swing the end walls 12 outwardly. As illustrated in Figure 5 the cross head 40 which is engaged by the bend inthe lever 30 is provided'with a downwardly directed terminal portion t? to which a link 48 is pivoted. This link l8 is in turn pivoted to one of the end walls 12 so that when the cross head 40 is moved rearwardly the end wall 12 will be moved into two branches, one of which is curved longitinlinally and provided with a cross head 40 while the other one is connected to a link 50 connected to an end'wall releasing lever 51 having its lower portion provided with a laterally directed bend 53 secured to the link 50 by a pivotalconnection.

When the cross head 40 is released by the- -lever 30 the spring 56 connected to the terminal portion l? and the curved branch of the lever promptly returns the lever 41 to its original position whereby the end walls 12 are simultaneously returned to their upright or original positions.

Then the end walls 12 have been moved outwardly the side walls may also be moved outwardly by means of releasing bars 60 having attaching straps 62 rigidly connected to the intermediate portions of the side walls. The releasing bars, of which there are two are rotatably secured to the side bars 7 by means of brackets 65 and have their rear terminal portions formed with upwardly directed handles 68 by means of which the side walls 8 may be swung outwardly.

A. machine constructed in accordance with this invention is especially adapted for use.

in the manufacture of gypsum blocks and in operation the gypsum is placed in the molds and is formed into hollow blocks or tiles thereby. Upon the formation of the block the extended ends of the cores l5 aretapped by the hammer l6 whereupon the same are released from engagement with the interior of theblock. The cores 15 may now be conveniently withdrawn by means of the lever 30 and as previously stated when the lever reaches the limit of its movement or when it approaches the limit oi its movement the cross head 40 is engaged whereby the lever d1 is operated for swinging the end walls outwardly. li ter the-end walls have been swung outwardly the side walls. may also be swung outwardly, thereby exposing the blocks and permitting the same tobe conveniently withdrawn. I I

in use the block will not in any way ad here to the walls of the mold because of the particular construction provided. I

in carrying. out the invention the machine may be mounted on standards 70 having wheels 71 mounted on tracks 72. I When tilling the mold it may be arranged in one position and when it is desired to discharge the block or remove the same the entire machinemay be moved on the tracks 72to a suitable point of discharge. in fact a battery of machines may be provided on an equal number of tracks and the space beneath the, tracks is left clear to allow the levers to operate with freedom.

Also in carrying out the invention an air operated hammer may be provided for tapping the ends of the cores. The air operated hammer is provided with an air hose 91 which may extend'itrom a suitable source of supply.

Having thus described the invention, what I claim is 1. A block manufacturing machine comprising a pair of side bars, side and end walls horizontally hinged to said side bars, tapered cores slidable tl'irough said end walls and securely held in position thereby, and a spring actuated hammer adapted to engage the extended ends of said cores whereby to release the same from engagement with the blocks.

2. A block manufacturing machine comarisino' a pair of side bars side and end walls l a 7 horizontally hinged to said side bars, tapered cores slidably through said end walls and securedly held in position thereby, a spring actuated hammer adapted to engage the extended ends of said cores whereby to release the same from engagement with the lOE) '1 ilocks, a

supported for rocking movement bv s aid side bars, a link connected to said level, and means connectingsaid link to the ends oi said cores whereby the operation oi the lever withdraws said cores A block manufacturing machine com prising a pair oi side bars side and end walls horizontally hing-ed to said side bars" tapered cores slidable through said end walls and securely held in position thereby, a spring actuated hammer adapted to engage the extended ends of said cores whereby to release the same from engagement with the blocks, a lever supported for rockit a movement by said side bars, a link connected to said lever. means connecting; said link to the ends of said cores whereby the oper ation of the lever withdrawn said cores, a second lever connected to said side bars and having a cross head arranged in the path of travel oi saic first named lever, and means connecting said second named lever to said end walls wher by the rocking movement of said first named lever will rock said second named lever and move the end walls outwardly.

A block manufacturing machine comprising a pair of side bars, side and end walls horizontally hinged to said side bars, tapered cores slidable through said end walls and securely held in position thereby, a spring actuated. hammer adapted to engage the extended ends or" said cores whereby to release the same from engagement with the blocks. a lever supported vtor rocking" movement by said side bars, a link connected to said lever, means connecting said link to the ends o't said cores whereby the opera tion of: the lever withdraws said cores. a second lever connected to said side bars and having: a cross head arranged in the path of travel oi said, first named lever. means connecting said second nan: id lever to said end walls whereby the rocking movement of said first named lever will. rock said second named lever and move the end walls outwardly, and springmeans connected to said second. named lever and said side bars tor returning the end walls to their upright positions.

5. A block manufacturing machine comprising a pair of side bars, side and end walls horizontallv hinged to said side bars tapered cores slidable through said end walls and securely held in position thereb ia a spring actuated hammer adapted to engage the extended ends of said cores \VllQlGl'lY to release the same From engagement witl the blocks, a lever supported for rocking:

path oi travel of said first named l ver, means connecting said second named lever to said end walls whereby the rocking; movement of said first named lever will rock said second named lever and move the end walls outwardly, spring; means connected to said second named lev r and said side bars for returning the end walls to their upright positions, and guiding means supported by said side bars and slidably receiving said cores.

6. A machine for manufacturing gypsum blocks comprisin a platform, side bars secured to the platform and extended for substantial distances beyond the opposite ends of the same, side and end walls horizontally hinged to said side bars, the end walls beprovided with openings, tapered cores received in said openings and having" their ends extended beyond the walls, a lever supported by said side bars and having' a cross head. a link connecting; said. cross head to one of said end walls, means connecting one end of said lever to the other end wall. coiled springs connected to said lever and said Side bars for returniiro the end walls to their upi'gxht positions and a core releasing lever carried by said side bars and adapted to engage said cross head whereby to operate the first named lever.

F A. machine for manufacturing vnsuin 2., blocks comprising); a platform, side bars secured to the platform and extender, for substantial distances beyond the opposite ends of the same. side and end walls horizontally hinged to said side bars. the end walls being provided with openings, tapered cores received in said openings andv having their ends extended beyond the walls, a lever supported by said side bars and havinga cross head, a link connecting; one 'end of said lever to the other end wall. coiled springs councctecl to said lever and said. side bars For returning the end walls to their upright positions and a core releasinqy lever carried by said side bars and adapted to engage said cross hea d whereby to operate the first named lever. and side wall releasing bars rotatably carried by said side bars and: having upwardly directed terminal portions constituting: handles.

8. A machine tor inanulf'acturing gypsum blocks comprising a platform, side bars secured to the platform and extended tor substantial distances beyond the opposite ends oi? the same, and end walls horizontally hinged to sai side bars. the end walls being provided with openings. taperinq cores received in said opening and having their ends extended beyond the walls. a lever supported by sa d side bars and having a cross lead, link connecting one end of said lever to the other end wall, coiled springs connected to said leve and said side bars for s I" -1- "M .----i 1.. retaining tie l 3 m a. L 1..., 4 n.1, men. an.

llll) tions, a core releasing lever carried by said side bars and adapted to engage said cross head whereby to operate the first named lever, side Wall releasing bars rotatably carried by said side bars and having upwardly directed terminal portions constituting handies and a spring actuated hammer 1,44ce,144c

connected to the last named lever for urging 10 the hammer into engagement with the ends of the cores.

JAMES FREDRIOK OALDVZELL. 

